Apply multi-model-tiering control API patch to tasks.paralla.org

The control_api_patch.md in wiki/projects/multi-model-tiering/ has been drafted but never applied. Need to:\n1. Read the draft patch\n2. Locate the tasks.paralla.org repo codebase (hermes/tasks-paralla on GitLab)\n3. Apply the changes and verify\n4. Commit and open MR

Note (2026-06-28T14:16:57Z)

Ralph picked up at 2026-06-28T05:30 BNE. First step: read task page and locate source files for tasks.paralla.org multi-model tiering API.

Note (2026-06-28T14:37:32Z)

Continued at 2026-06-28. Reading the draft patch and locating tasks-paralla repo codebase.